ORIGINAL RESEARCH
Cr (VI) Removal from Aqueous Solution Using
Starch and Sodium Carboxymethyl
Cellulose-Coated Fe and Fe /Ni Nanoparticles
| 1 | School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China |
| 2 | Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, China |
| 3 | Hubei Key Laboratory of Regional Development and Environmental Response, Hubei University, Wuhan, 430062, China |
Online publish date: 2018-06-29
Publish date: 2018-07-09
Submission date: 2017-11-27
Final revision date: 2018-01-08
Acceptance date: 2018-01-23
Pol. J. Environ. Stud. 2018;27(6):2785–2792
KEYWORDS:
nanoscale zero-valent ironsodium carboxymethyl cellulosestarchCr (VI) removalfirst-order kinetic model
TOPICS:
ABSTRACT:
Starch and sodium carboxymethyl cellulose-coated Fe and Fe /Ni nanoparticles were synthesized
and their Cr (VI) removal capabilities were evaluated and compared. We found that starch and sodium
carboxymethyl cellulose-coated nanoscale zero-valent iron-nickel (SS-nZVI-Ni) showed the better Cr
(VI) removal performance. The effect of acidic conditions on Cr(VI) removal by SS-Nzvi-Ni revealed
that the Cr (VI) removal efficiency by SS-nZVI-Ni reached the maximum of 95.70% at pH = 2. The effect
of different initial Cr (VI) concentrations showed that SS-nZVI-Ni performed well at a high Cr(VI)
concentration. Langmuir-Hinshelwood first-order kinetic model could describe the reduction process
well. SEM images revealed that SS-nZVI-Ni had a large surface area, which discarded the problem of
aggregation. XRD and XPS analysis of SS-nZVI-Ni showed that SS-nZVI-Ni and Cr (III) formed an alloy
on the surface of SS-nZVI-Ni after the reaction. The study provides an option for practical application of
SS-nZVI-Ni in Cr (VI) removal.
CORRESPONDING AUTHOR:
Bin Ji
Wuhan University of Sicence and Technology, Wuhan University of Sicence and Technology, 430065 Wuhan, China
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